Id	Element	Ion	Binding family	Amino acids or nucleotide residues names	All bound residues	Is homomer	Number of bound amino acids or nucleotide residues	Number of all bound residues	Number of coordinating chains	Representative
7XNK-K-1	K	K⁺	G3Y1	GLY.TYR.	GLY.TYR.	✔	4	4	3	✔
7XNK-K-2	K	K⁺	G4I4	GLY.ILE.	GLY.ILE.	✔	8	8	4	✔
7XNK-K-3	K	K⁺	I2T4	ILE.THR.	ILE.THR.	✔	6	6	4	✔
7XNK-K-4	K	K⁺	T4	THR.	THR.	✔	4	4	4	✔
7XDH-K-1	K	K⁺	G8	DG.	DG.	✔	8	8	2	✘
7XDH-K-2	K	K⁺	G8	DG.	DG.	✔	8	8	2	✘
7XDH-K-3	K	K⁺	G8	DG.	DG.	✔	8	8	2	✘
7OPH-K-1	K	K⁺	T4	THR.	THR.	✔	4	4	4	✔
7OPH-K-2	K	K⁺	T4V4	THR.VAL.	HOH.	✔	8	2	4	✔
7OPH-K-3	K	K⁺	S2	SER.	THR.VAL.	✔	2	8	2	✔
7OPH-K-4	K	K⁺	S2	SER.	SER.	✔	2	2	2	✔
7X7G-K-1	K	K⁺	G8	DG.	DG.	✔	8	8	2	✘
7X7G-K-2	K	K⁺	G8	DG.	DG.	✔	8	8	2	✘
7X7G-K-3	K	K⁺	G7	DG.	DG.	✔	7	7	2	✘
7WSW-K-1	K	K⁺	T4V4	THR.VAL.	THR.VAL.	✔	8	8	4	✔
7WSW-K-2	K	K⁺	T4	THR.	THR.	✔	4	4	4	✔
7WSW-K-3	K	K⁺	G4Y4	GLY.TYR.	GLY.TYR.	✔	8	8	4	✔
8AAD-K-1	K	K⁺	G6	DG.	DG.	✔	6	6	2	✘
8AAD-K-2	K	K⁺	G6	DG.	DG.	✔	6	6	2	✔
7FCV-K-1	K	K⁺	G4	GLY.	GLY.	✔	4	4	4	✔